Dust-removing machine.



K. F. W. JAENEGKE DUST REMOVING MACHINE. APPLICATION FILED MAY 24, 1912.

1,050,027. Patented Jan. 7, 1913.

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A 2 laqjileilgckqmvzmolq, WITNESSES ATTO R N EY COLUMBIA PLANOCIRAFH50., WASHINGTON. 0. cv

K; F. W. JAENEGKE DUST REMOVING MACHINE. APPLIOATION FILED MAY 24, 1912.

1,050,027. Patented Jan. 7, 1913.

3 SHEETS-SHEET 2.

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WITNESSES am? M ATTORN EY K. F. W. JAENEGKE DUST REMOVING MACHINE.

APPLICATION FILED MAY 24, 1912.

1,050,027. Patented Jan.7,1 913.

O 3' 3 SHyEETS-SHEET 3.

KFWJM INVENTOR,

fi md m BY %\f I ATTORNEY UNITED $TATE PATENT @FFTQE.

KARL FRIDRICH WILHELM JAENEGKE, OF NORTH TON'AW'ANDA, NEW' YORK.

DUST-REMOVING- IVLACI-IINE.

To all whom it may concern:

Be it known that I, KARL FRmRIoH Nib IIELM Jamvnoxn, citizen of theUnited States, residing at North Tonawanda, in

the county of Niagara and State of New York, have invented a new anduseful Dust- Removing Machine, of which the following is aspecification.

This invention has reference to improvements in dust removing machines,and while more particularly designed for removing chalk dust fromblackboard erasers, may be employed for removing dust from otherarticles.

In accordance with the present invention there is provided a feed devicecapable of carrying a succession of blackboard erasers or other devices,and such erasers are during their travel through the machine subjectedto the action of heaters which serve to disturb the lodged dust, while astrong draft of air is caused to traverse the part of the machinethrough which the erasers are traveling, so as to remove the dust fromthe erasers as rapidly as it is beaten out of the erasers.

In order that the invention may be fully understood reference is had tothe accompanying drawings forming a part of this specification, butwhile the drawings show a practical embodiment of the invention it issusceptible of other practical embodiments which may differ in detailsfrom the showing of the drawings without, however, departing from thesalient features of the invention, wherefore the invention is notlimited to any exact conformity with the showing of the drawings but maybe changed and modified within such limits as do not mark any materialdeparture from the scope of the invention.

In the drawings :-Figure l is a plan view of a machine embodying thepresent invention. Fig. 2 is a section of the upper portion of themachine on the line 2-2 of Fig. l with some parts shown in elevation andwith the lower portion of the machine shown in side elevation. Fig. 3 isan elevation of that end of the machine constituting the left hand endof Fig. 1 with a portion in section on the line 33 of Fig. 1. Fig. 4 isa section on the line 1-A1 of Fig. 1 with some parts omitted. Fig. 5 isa perspective view of an actuating member for the heaters.

Referring to the drawings, there is shown Specification of LettersPatent.

Application filed May 24, 1912.

Patented Jan. *7, 1913..

Serial No. 699,516.

a frame 1 which at an appropriate point carries a cross piece 2. Thesides of the frame are carried above the cross piece 2, as indicated at3 and 4:, respectively, for the purpose of supporting certain operativemembers. The upwardly extended members 3 support a casing 5 of a widthsomewhat greater than the width of a blackboard eraser or other articleto be treated, and at the ends this casing terminates in ledges 6, 7,respectively, at an appropriate distance below a top member 8. Theledges 6 and 7 extend from the respective outer ends of the casingtoward the uprights or extensions 3 and terminate adjacent these parts,while between the ledges and supported thereby is a wall 9 having a droptoward the center, while the side portions of the casing 5 connected bythe wall 9 have a like shape to the wall.

Traversing the side members of the casing adjacent the ends of the wall9 and within its limits are shafts 10, 11, respectively, which within.the limits of the wall 9 and easing 5 carry spaced sprocket wheels 12supporting sprocket chains 13 constituting members of a conveyerprovided with slats or flights 13 so arranged that the upper run of theconveyor is approximately in line with the upper surfaces of the ledges6 and 7, which when the machine is in oper ation are approximatelylevel.

Above the ledges 6 and 7 the casing 5 is provided with upstandingportions l l, 15, respectively, connected at the upper ends by the covermember 8, and positioned close to the inner ends of the ledges 6 and 7there are within the upper portion of the casing depending webs l6having their lower ends spaced from the respective ledges 6 and 7, andextending from the lower end of one of these webs to the lower end ofthe other is a flexible band 17 in overriding relation to the upper runof the conveyer made up of the members 13 and 13 The upstanding portion15 of the casing is provided with an elongated opening 18 closed by atransparent member 19 which may be made of glass, so that the interiorof the casing above the conveyer may be at all times visible. Theupright wall 1a of the conveyer is between the webs 16 provided with aseries of substantially parallel upright elongated slots 20 for apurpose which will presently appear.

Leading from a portion of the casing 5 occupied by the conveyor is aconduit 21 connected at the end remote from the easing to the intakethroat of a fan casing 22 in which is housed a suction fan 23 on one endof a drive shaft 2% having a bearing 25 in line with the axis of thecasing 22 and at the other end having a bearing 26 mounted on that endof the cross piece or shelf 2 remote from the casing 5, the fan casin 22being also mounted on the shelf 2. That end of the shaft 24 remote fromthe fan 23 is provided with a drive pulley 27 to which power may beapplied in any appropriate manner as by a belt, the drive pulley 27being indicative of any suitable means for imparting motion to the shaft24:.

At an appropriate point on the shaft 2st there is mounted a worm 28engaging a worm gear 29 mounted on one end of a shaft 30 having abearing 31 supported from the shelf 2 and another bearing 32 on a brace33 serving to stiffen the correspond ing upright t. The shaft 30 islocated in a plane cutting the axis of the shaft 2% at sitibstantiallyright angles and the end of the shaft 30 remote from the worm gear 29carries a sprocket wheel 34: connected by a sprocket chain 35 to anothersprocket wheel 36 on one'end of a shaft or spindle 37 having journalbearings 38 on the uprights 4 near the upper ends thereof, while betweenthese journal bearings 38 the shaft 87 has formed thereon or securedthereto a series of elongated cams 89 each terminating in an abruptradial shoulder 40, these cams all being alike and having a pitch withreference to the axis of rotation of the shaft 37. The several cams aresubstantially coextensive with the distance between the bearings 38.

Extending from one upright 41: to the other is a bar il forming a pivotsupport for a series of beater rods 42, each beater rod wh ere engagingthe bar 41 being formed into a loop 43 in encircling relation to the barll. Each rod 4C2 is in overriding relation to the cams 39 and is thereformed with a somewhat abrupt bend constituting a shoulder is sodisposed as to be in the path of the cams 89, and to drop from thehighest point of a cam over the abrupt portion thereof onto a lowerpoint of the next succeeding cam as the several cams 39 retate,wherefore that end of each rod d0 remote from the pivot support 41 iscaused to rise by the action of the cams and will then drop whenescaping from one cam to the nextsucceeding cam. Those ends of the rods42 remote from the bar 41 pass through respective slots 20 into theinterior of the casing 5 as defined by the upper extensions 1st and 15thereof, these rods being located above the band 17. Extending from oneupright 4 to the other is a strip 45 carrying a series of springs 46,each of which is formed at the free end into a loop at? in embracingrelation to an extension 48 of the corresponding rod 42 on that side ofthe pivot support 41 remote from the cams 39. The springs 4:6 are sorelated to the rods 4-2 that they tend to force the free ends of therods downwardly, wherefore when a shoulder tl of a rod 42 escapes fromthe high portion of the cam 89, the rod -12 is vigorously impelled in adirection to bring its free end toward the band 17.

That end of the shaft 3? remote from the sprocket wheel 36 carries apulley as around which there is passed a belt. 50 carried to directionchanging idlers 51 on the casing 5, and from them the belt passes to andaround a pulley 52 on the outer end of the shaft 10, which latterextends through the corresponding wall of the casing 5.

The fan casing 22 is provided with a discharge throat 53 from whichthere leads a conduit 5-1 to any suitable point of disposal.

In the particular showing of the drawings the arrangement is such thatthe upper run of the conveyer as viewed in 3 will travel from right toleft, and consequently the shelf 6 delines the feed end. of the device.Blackboard eraser-s or other articles to be cleansed are placed upon theledge G and pushed under the band 1'? which readily yields to thepassage of the erasers and these erasers ultimately reach the conveyorand are carried thereby beneath the band 17 toward. the other end of themachine to be ultimately discharged upon the ledge 7, from which theymay be removed in any suitable manner. While the erasers are being carried through the casing 5 by the conveyor they are given a series ofblows by the free ends of the rods 42, which are lifted in succession,and then forcibly moved toward the eraser by the action of the cams 39and springs 48, wherefore each eraser on passing through the machinereceives a series of vigorous blows delivered within the upper portionof the casing 5 as defined by the upper walls Ll and 15, and whateverdust may be within the erasers is thoroughly loosened. At the same timethe fan 23 is in operation and causes a strong draft of air to enter theupper portion of the casing where the beat ing has occurred, passingabout the erasers and through the conveyor to the conduit 21. Thisstrong air stream readily picks up the fine dust particles and thelatter are removed from the erasers and the neighborhood of the erasersand are ultimately conveyed to the discharge conduit 54, wherefore bythe time the erasers reach the ledge 7 they are thoroughly cleansed fromall contained dust which is usually chalk dust.

The band 17 of flexible material interposed between the erasers and theheaters and not only protects the erasers from direct j:

contact with the heaters but prevents the eraser-s from getting abovethe heaters on their passa e through the machine.

It is evident, of course, that the machine of the present invention isadaptable to the removal of dust from other articles than blackboarderasers, even though for some articles it may be necessary to slightlymodify the structure to accommodate such articles, but this may be donewithout in any way departing from the principles upon which theinvention is based.

To facilitate the cleansing of the lower portion or" the casing 5 whereoccupied by the conveyer, the outer wall of the casing 15 provided withan orifice normally closed by a plug llhat is claimed is 1. In a machinefor removing dust from articles, a casing, a conveyor tor the articleswholly housed in the casing, and a series of heaters having theirterminal portions extending into the casing and there movable toward andfrom the conveyor to strike blows upon articles carried by the conveyer,said casing having slots elongated in the direction of movement of theheaters and traversed by said heaters, the walls of the slots serving asguides for the active ends of the heaters.

2. In a machine for removing dust from articles, a casing provided withentrance and exit portions and between said portions with a series ofupright slots, a conveyer wholly housed in the casing at a lower levelthan the slots, a series of heaters entering the casing through theslots and guided thereby, and means for causing reciprocation of theheaters into and out of active relation to articles carried upon theconveyer through the machine.

3. In a machine for removing dust from articles, a casing provided withentrance and exit portions, and between said portions with a series ofupright slots, a conveyor wholly housed in the casing at a lower levelthan the slots, a series of heaters entering the casing through theslots, and means for causing reciprocation of the heaters into and outof active relation to the articles carried upon the conveyer through themachine, said casing being provided with a stationary flexible band inoverriding relation to the conveyer and between the same and theheaters.

at. In a machine for removing dust from articles, a casing having a dropportion, entrance and exit portions at opposite ends of the dropportion, a. conveyer wholly housed in the drop portion of the casing andhaving a run on substantially a level with the entrance and exitportions of the casing and constituting supporting and conveying meansfor the articles to be treated, a series of heaters entering and guidedby the casing above the conveyer in operative relation to articles onthe conveyer, and means for exhausting air from the casing to causecurrents of air to flow through the casing to convey dust therefrom.

In a machine for removing dust from articles, a casing having a dropportion, entrance and exit portions at opposite ends of the dropportion, a conveyor housed in the drop portion of the casing and havinga run on substantially a level with the entrance and exit portions ofthe casing and constituting supporting and conveying means for thearticles to he treated, a series of heaters entering the casing abovethe conveyer in operative relation to articles on the conveyer, andmeans for exhausting air from the casing to cause currents of air toflow through the casing to convey dust therefrom, said casing beingprovided with a stationary flexible band interposed between the conveyorand the heaters.

6. In a machine for removing dust from articles, a casing provided witha drop portion and with entrance and exit ledges at the ends of the dropportion and above the ledges and drop portion having a longitudinalseries of upright slots through one wall, said casing also having asight opening in the wall opposite the slot-ted wall, a conveyer withinthe drop portion of the casing and having a run on substantially thelevel of the ledges, pendent members adjacent the entrance and exit endsof the upper portion of the casing, a band of flexible material carriedby the pendent members in overriding relation to the conveyer, a seriesof heater rods having free ends entering the casing through the slots inoverriding relation to the hand, an exhaust fan connected to the dropportion of the casing, and operating means for the beater rods forcausing them to move from and toward the conveyer.

7. In a machine for removing dust from articles, a casing, means withinthe casing for causing a progressive movement of the articles to betreated therethrough, a series of heaters entering the casing inoperative relation to articles passing therethrough, and means forpreventing the articles being treated from moving into overridingrelation to the heaters, said last-named means having means forpreventing it from moving progressively with the articles being treated.

8. In a machine for removing dust from articles, a casing having meanstherein for directing articles through the casing, pivoted rods havingfree ends entering the cas ing and there guided, springs for the rodstending to move them toward the means for directing articles through thecasing, and means engaging the rods on the sides of their pivots towardthe casing for imparting progressively to the series of rods movementsin opposition to the action of the springs.

9. In a machine for removing dust from articles a casing having meanstherein for directing articles through the casing, pivoted rods havingfree ends entering the casing and there guided, springs for the rodstending to move them toward the means for directing articles through thecasing, and means engaging the rods on the sides of their pivots towardthe casing for imparting progressively to the series of rods movementsin opposition to the action of the springs, said last-named meanscomprising a circular series of cams each axially eX tended to includethe entire series of rods and having a progressive pitch from one end tothe other to engage the beater rods in succession.

10. In a machine for removing dust from articles, means for impartingprogressive movement to the articles to he treated, heaters eachcomprising a rod having a loop formed near one end and adjacent the loopformed into a shoulder a common oivot support for the rods traversingthe loops therein, a rotatable series of elongated cams each having apitch with relation to the axis of rotation and related to the rods toengage the shoulders thereon, and springs engaging those ends of therods remote from the ends acted upon by the cams.

In testimony, that I claim the foregoing as my own, I have heretoaffixed my signature in the presence of two Witnesses.

KARL FRIDRICH WILHELM JAENECKE.

Witnesses:

CHARLES GLAWF, EDWARD JAENECKE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents

